next stack considering? Advice?

I am 19. 5'10 and I weigh about 199. I dont know my bf% but i can see my upper abs, but dont have a 6 pack. Diet and cardio have never been better. My training is long and hard and i love to do it. That being said heres my next stack i am thinking of......

thanks for the tip. I have used mstak and LOVE IT. Thats why i thought it might be a good add on to this stack. With a good diet,cardio, and training, i think this stack could be a sweet all natural stack.

I am 19. 5'10 and I weigh about 199. I dont know my bf% but i can see my upper abs, but dont have a 6 pack. Diet and cardio have never been better. My training is long and hard and i love to do it. That being said heres my next stack i am thinking of......

let me know what to add,drop, all considerations will be much appreciated....

id do the HGHup but thats about as far as i would go with dealing with hormones at 19,
dont do the m-stak as its basically an expensive combo of Ibcaa and phyto-test ingredients but is missing the best part of it all.... Testofen, lots of guys love testofen on here there are great reviews of Phyto-test so check that one out, RPM and Drive are very solid, and i am ocing my dermatherm right now, almost out though